package gaoji;

/**
 * Remarks: 测试生产者消费问题2：信号灯发，标志位解决
 * Class name :PC2
 * Date :2023/2/16 15:58
 * Author:杨俊源
 */
public class PC2 {
    public static void main(String[] args) {
        TV tv = new TV();
        new Player(tv).start();
        new Watcher(tv).start();
    }
}

//生产者--》演员
class Player extends Thread{
    TV tv;
    public Player(TV tv){
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            if (i % 2 == 0){
                this.tv.play("快乐大本营");
            }else {
                this.tv.play("抖音记录美好生活");
            }
        }
    }
}

//消费者--》观众
class Watcher extends Thread{
    TV tv;
    public Watcher(TV tv){
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            tv.watch();
        }
    }
}

//产品--》节目
class TV{
    //演员表演的时候，观众等待

    //观众观看，演员等待
    String voice ;
    boolean flag = true;

    //表演
    public synchronized void play(String voice){
        if (!flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("演员表扬了：" + voice);
        //通知观众观看
        this.notifyAll();       //通知唤醒
        this.voice = voice;
        this.flag = !this.flag;
    }

    //观看
    public synchronized void watch(){
        if (flag){
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观看了："+ voice);
        //通知演员表演
        this.notifyAll();
        this.flag = !this.flag;
    }
}